MAX20801 MPP Tracking DC-DC Converter General Description Benefits and Features The MAX20801 family of Cell-String Optimizers enables Performs MPPT on 20-24 Series Connected PV Cells cell-string Maximum Power Point Tracking (MPPT), Fast MPPT Reacts Quickly to Changing Conditions providing superior photovoltaic (PV) module energy harvest Integrated Voltage-Limiting Clamps Output Voltage and reliability as compared to both standard panels and those incorporating module level MPPT technologies. Integrated Current-Limiting Clamps Output Current Photovoltaic cells can only deliver maximum power under Active Bypass Function Eliminates Diodes and Hot- specific electrical conditions that vary significantly with Spots exposed irradiance and temperature. Series connections Supports Panel Electroluminescence (EL) Testing of PV cells creates a significant sensitivity to cell Peak 99.1%, CEC 98.7% and Euro 98.3% Efficiency mismatch, resulting in less than optimal power and energy production under real-world conditions. The MAX20801 Cell-String Optimizer enables a string of PV cells to Ordering Information appears at end of data sheet. deliver their collective maximum power into a wide range of load conditions. This enhanced electrical flexibility eliminates power loss from mismatch in PV strings and arrays, ultimately improving energy production and system design flexibility. Additional unique advantages provided by the Cell-String Optimizers: Reduction in performance degradation over the PV module operating lifetime Elimination of high losses associated with bypass diode conduction Limit the operating voltage of the PV module MAX20801 Cell-String Optimizer Embedded in 60-Cell PV Panel PV+ C PV+ BST VBST V CC L OUT C OUT IN MAX20801 C VCC PV- U1 C OUT PV- 19-100278 Rev 5 6/20MAX20801 MPP Tracking DC-DC Converter Absolute Maximum Ratings Input Voltage (PV+) ..................................................-0.3V ~ 21V Junction Temperature (T ) ...............................................+150C J Output Voltage (DC) .................................................-0.3V ~ 21V IC Junction Temperature (2hrs) (Note 1) ........................+200C Output Voltage (25ns) .................................................-6V ~ 25V Storage Temperature Range ............................ -65C to +150C Peak Current (OUT) ............................................................25A Peak Reflow Temperature ...............................................+260C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Operating Ratings Input Voltage (V ) ................................................1.5V to 18V Junction Temperature (T ) .................................-40C to +150C PV+ J Output Current (I ) ................................................ -4A to 12A OUT Package Information PACKAGE CODE: 10 FCQFN Package Code P105A3F+1 Outline Number 21-100119 Land Pattern Number 90-100039 THERMAL RESISTANCE, FOUR-LAYER BOARD Junction to Case ( MAX) 1C/W JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Note 1: IC Junction Temperature can reach 200C for a limited duration of two hours as in accordance with IEC 61730 and UL1703 testing requirements. Maxim Integrated 2 www.maximintegrated.com